Determination of Rare Earth Elements, Yttrium, Thorium, and Other Trace Elements in Monazite Samples by Inductively Coupled Plasma Mass Spectrometry

Padmasubashini, V.

doi:10.46770/as.2013.01.002

Cited by 7 publications

(3 citation statements)

References 9 publications

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“…The analytical precision was better than 0.05 μmol/L for NO 3 + NO 2 ‐N, 0.02 μmol/L for PO 4 ‐P, and 1 μmol/L for Si(OH) 4 . All REEs samples were pre‐concentrated using NOBIAS PA1 (Q. Liu et al., 2022; Takata et al., 2009) and analyzed with an ICP‐MS (Agilent 7700×, USA) equipped with an Apex IR desolvating nebulizer (ESI, USA). Lutetium was utilized as the internal standard for quantifying the REE recoveries during pre‐concentration (Text S1 in Supporting Information ), which were higher than 95%.…”

Section: Methodsmentioning

confidence: 99%

Origins of Low‐Oxygen Bottom Water Influenced by Tide and ENSO on the Outer‐Edge Shelf of East China Sea: Multi‐Chemical Tracer Approaches

Deng,

Zhang,

Zhu

et al. 2024

JGR Oceans

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The East China Sea (ECS) is one of the largest marginal seas in the world with high primary productivity and a large area of low dissolved oxygen. This study observed the low‐oxygen bottom water on the outer‐edge shelf of ECS in summer seasons of 2018–2020. The contributions of various water masses to low‐oxygen waters were quantified, and the interaction between low‐oxygen water and Kuroshio water was validated by a mixing model using heavy rare earth elements (HREEs) together with potential temperature, and salinity. For further reliability verification, tracers such as δ34S and 226Ra were additionally utilized to avoid the non‐conservative processes on the shelf area. The low‐oxygen water on the shelf was clarified to be linked to the inner/middle shelf water, and dominated by Kuroshio Subsurface Water (KSSW, 81% ± 3%) and influenced by a non‐negligible extent of pore water (3.0% ± 0.5%). Our findings revealed the transport of low‐oxygen water from the outer‐shelf edge to the Kuroshio area, whose dissolved inorganic nitrogen and dissolved inorganic phosphorus contributions to Kuroshio were 34%–82% and 35%–83%, respectively. The nutrients of low‐oxygen water were regulated primarily by the origins of water and secondarily by organic matter remineralization (DIN: ∼17% and DIP: ∼24%). As control factors, the tide, especially spring tide largely enhanced the water contribution of pore water to low‐oxygen water by 67%, and the El Niño‐Southern Oscillation potentially affected the contributions of KSSW and mid‐shelf water to low‐oxygen water.

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Section: Methodsmentioning

confidence: 99%

Origins of Low‐Oxygen Bottom Water Influenced by Tide and ENSO on the Outer‐Edge Shelf of East China Sea: Multi‐Chemical Tracer Approaches

Deng,

Zhang,

Zhu

et al. 2024

JGR Oceans

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“…ICP-MS provides a more powerful and accurate determination of rare earth elements and also the trace elements present in ppm-level. Padmasubashini and Nandakishore determine rare earth and radioactive elements in ilmenite by ICP-MS (Padmasubashini and Nandakishore 2013). Rajendran et al determine rare earth elements of Indian coastal monazites using ICP-MS (Rajendran et al 2008).…”

Section: Methodsmentioning

confidence: 99%

Raman-XPS spectroscopy, REE chemistry, and surface morphology of Fe-Ti oxide heavy mineral sands: a case study from Varkala-Kovalam coast, south-west India

Rejith

Sundararajan

Mohamed

et al. 2021

Applied Earth Science

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The beach sands of the Varkala-Kovalam coast, south-west India, are enriched with heavy minerals with a high concentration of ilmenite followed by sillimanite, monazite, rutile, zircon, and garnet. The Fe-Ti oxide minerals such as ilmenite, its altered product leucoxene, and rutile were successfully recovered, and their structure, chemistry, and surface morphology were analysed using advanced characterisation techniques like Raman spectroscopy, Energy Dispersive X-ray Fluorescence (ED-XRF), High Resolution Inductively Coupled Plasma Mass Spectrometry (HR-ICP-MS), Thermogravimetric Analysis (TGA), UV-Visible-NIR (UV-Vis-NIR) spectroscopy, X-ray Photoelectron Spectroscopy (XPS), and Scanning Electron Microscopy (SEM-EDS). The chemical composition, surface chemistry, the oxidation state of surface elements, anisotropic crystal behaviour of the minerals due to physical or chemical processes, discrimination of polymorphs, and finally the morphological changes due to mechanical impacts were also analysed. The study provides solid information to the scientific community and policymakers for determining the grade and potential applications of these strategic minerals.

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“…In coastal deposits, heavy minerals enrichment occurs by winds, waves and currents. Zircon makes up a relatively small percentage of the economic heavy minerals in most deposits and is produced as a by product of heavy-In recent years, Inductively Coupled Plasma Optical Emission Spectrometry (ICP-OES) [11] trace element determinations, especially for REEs and have been applied to their determination in geological materials like rocks, ores, minerals, and concentrates [14]. The goal of the present work is a study for the determination of a trace amount of zirconium and hafnium in the presence of each other in the Egyptian beach black sand monazite which was selected and physically separated [15].…”

Section: Monazitementioning

confidence: 99%

Determination of zirconium and hafnium in Egyptian monazite by ICP-OES

Moawad¹,

El-Wakil

Hamed

et al. 2021

Egypt. J. Chem.

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The determination of Zirconium and Hafnium in presence of each other in geological sample Plasma Optical Emission Spectrometry (ICP adjusted and the suitable zirconium and hafnium lines were selected to give the most accurate determination each line was tested by a solution of 20 ppm zirconium mixed with 1 ppm hafnium to obtain the most sensitive lines which were 339.198 nm for zirconium and 239.336 nm for hafnium. effect of the major elements of monazite as Uranium, Thorium, Rare earth elements, Iron and Aluminium on the determination of the elements under studying. T which was upgraded of about 97% purity; the sample was leached by concentrated sulfuric acid (H zircon which contains zirconium and hafnium as a residue decomposition and measured by ICP-OES (Nuclear Materials Authority, Egypt) on the selected lines.

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Determination of Rare Earth Elements, Yttrium, Thorium, and Other Trace Elements in Monazite Samples by Inductively Coupled Plasma Mass Spectrometry

Cited by 7 publications

References 9 publications

Origins of Low‐Oxygen Bottom Water Influenced by Tide and ENSO on the Outer‐Edge Shelf of East China Sea: Multi‐Chemical Tracer Approaches

Origins of Low‐Oxygen Bottom Water Influenced by Tide and ENSO on the Outer‐Edge Shelf of East China Sea: Multi‐Chemical Tracer Approaches

Raman-XPS spectroscopy, REE chemistry, and surface morphology of Fe-Ti oxide heavy mineral sands: a case study from Varkala-Kovalam coast, south-west India

Determination of zirconium and hafnium in Egyptian monazite by ICP-OES

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